• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

What driver tube(s) can be operated linearly at 5mA or less?

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#21
I'm skeptical that this will make a great IT based on the data that Cinemag sent you
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Thanks PretentiousFood,

Great information. It is heartening to know that there are low current tubes that can be linear for use with any IT topology. I'll have to start a list, there are a few different Russian variants too. And the info about the Cinemag is appreciated, I may add a pair to my stash just for experimenting anyway. The schematic I posted above #7 is to experiment with many different drivers and IT's with the same power stage. A hybrid driver board is perfectly in line with this too.
 
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